Yes it is feasible maybe you went a tad too low but okay, possible and reasonable aesthetically; I wish to warn you about the simulation posted, you designed your tip overly high, upturned or "piggy", that's not correct and you'd be unhappy with it. The type of radical change you wish is very acceptable and harmonious (tip rotation aside), but only possible with a complete set of modern structure rhinoplasty and graftings. This is a case for a difficult, comprehensive but in good hands very rewarding structure rhinoplasty, do research well the surgeon's experience, talent and passion for fine work on difficult cases; do perform dozens of in person and online consultations before moving forward. In the link associated to this answer you can find further information and images related to your problems.